Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
  • B21B31/07—Adaptation of roll neck bearings
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
  • B21B31/07—Adaptation of roll neck bearings
  • B21B31/074—Oil film bearings, e.g. "Morgoil" bearings
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
  • B21B31/07—Adaptation of roll neck bearings
  • B21B31/078—Sealing devices
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
  • B21B2203/18—Rolls or rollers

Definitions

• the invention relates to a roller arrangement for rolling rolling in a rolling mill according to the preamble of patent claim 1.
• a roll neck rotates in a stationary bearing bush, wherein the bearing bush is arranged in a chock.
• Bearing bush is usually in the range of 1% o of the bearing diameter, d. H. about 1 mm clearance at 1 m bearing diameter, which is why a corresponding annular gap between the roll neck and the bearing bush is formed.
• Annular gap is typically with lubricants, z. B. oil filled, so that in the
• Annular gap forms an oil film.
• EP 1 031 389 B1, EP 1 699 575 B1 and DE 198 31 301 A1 describe sealing devices for rolls in rolling mills.
• the document DE 31 17 746 A1 describes a hydrodynamic radial bearing.
• a lubricating film is also referred to below as a lubricating film.
• Drainage possibility for the lubricant is, inter alia, that the operating temperature of the lubricant and the roll neck, especially at higher speeds increases and therefore expensive cooling systems are required to limit the increase in temperature or to keep uniform. Due to the increase in temperature, the viscosity of the lubricant decreases. Consequently, the lubricant pressure also decreases and it reduces the bearing capacity of the storage. Most are closed Systems integrated check valves to prevent running of the cooling circuit.
• the object of the invention is a known roller order
• roller assembly according to the invention should also be easy to install and retrofit in existing systems.
• support load point which is represented by the angular position A of the narrowest gap (h min ) in the load case between roll neck and chock.
• A defines a support load point, which is represented by the angular position A of the narrowest gap (h min ) in the load case between roll neck and chock.
• the roller assembly according to the invention initially, due to the blocking of the side flow of the lubricant by means of the sealing rings, leads to an increase in pressure of the lubricant in the annular gap in the region of the support load point and thus to a load capacity increase or rolling force increase of the roller assembly. At the same time, the thickness of the lubricating film is increased in the region of the support load point and thus the reliability, for example in terms of
• Drainage channel according to the invention is dimensioned / is that he has a
• the invention advantageously allows easy retrofitting in
• a pin bushing is provided for mounting on the roll neck.
• the pin bushing can advantageously be easily and inexpensively replaced in case of wear.
• the annular gap is then formed between the bearing bush and the pin bushing.
• the bearing bush in the flow angle region at least one ball-side drain channel for fluid-conducting connection of the annular gap with a ball-side
• the two drainage channels advantageously allow a radial and lateral outflow of oil from the annular gap of the bearing bush.
• Flow angle range extends in the circumferential direction, or it can be provided a plurality of drainage channels, which are arranged on the ball side or on the ballenfernen side in the flow angle range of the bearing bush in the circumferential direction next to each other.
• the bushing can in the passage angle range on their the
• the roller of the roller arrangement according to the invention may be a work roll, a support roll or an intermediate roll.
• FIG. 1 shows the roller assembly according to the invention according to a first
• FIG. 1 shows the roller assembly according to the invention in a longitudinal section;
• Figure 2 shows the roller assembly according to the invention in a cross section;
• 3 shows the roller assembly according to the invention according to a second embodiment;
• 4 shows the roller assembly according to the invention according to a third
• FIG. 5 shows the bearing bush according to the invention with different variants for the drainage channels.
• FIG. 1 shows the roller arrangement 100 according to the invention in accordance with a first exemplary embodiment.
• the roll arrangement 100 comprises a roll 110 having a roll bale 12 and a roll neck 14.
• the roll is rotatably mounted in a chock 120, more precisely in a bearing bush 130 which is non-rotatably mounted in the chock.
• the bearing bush 130 has a receiving opening for receiving the roll neck 1 14, wherein the inner diameter of the receiving opening relative to the
• Spigot bush 1 16 is formed so larger that between the bearing bush and the roll neck or the journal bush 1 16 an annular gap 180 for receiving a lubricant, typically oil remains; see Figure 2.
• a sealing ring 140 is arranged for local sealing of the annular gap with respect to a Roller box-side receiving space 160.
• a further sealing ring 150 is arranged on the roller bale remote end side of the receiving opening for sealing there the annular gap 180 relative to the local there
• the bearing bush 130 has at least one outflow channel 132 for discharging the lubricant from the annular gap 180 into one of the oil receiving chambers 160, 170.
• the bearing bush 130 has at least one outflow channel 132 for discharging the lubricant from the annular gap 180 into one of the oil receiving chambers 160, 170.
• Embodiment is a ball-side drainage channel 132-1 and a
• ballenferner outflow channel 132-2 provided for discharging oil from the
• the drainage channels 132-1, 132-2 fluidly connected to the annular gap and the respective Olfactraum 160, 170 are connected.
• the drainage channels extend by way of example in sections in the radial and axial directions.
• FIG. 2 shows a cross-section through the roller arrangement according to the invention under the load of the rolling force F, which here by way of example in the direction of FIG.
• the bearing bush 130 is divided, as seen in the circumferential direction, into a passage angle range ⁇ and a shut-off angle range a, which is understood as the difference between 360 ° and the flow angle range ⁇ .
• the shut-off angle range ⁇ extends, starting from ⁇ + ⁇ , with -10 ° ⁇ ⁇ + 35 ° counter to the direction of rotation of the roller by a maximum of 270 °.
• the flow area is defined as the complement angle range to the Absperrwinkel Scheme, ie to 360 ° - the Absperrwinkel Colour a.
• FIG. 3 shows a second exemplary embodiment of the roller arrangement, more precisely for a possible guidance of the drainage channels 132.
• the second exemplary embodiment provides that the ball-side and the ball-distal drainage channel 132-1, 132-2 not only - starting from the annular gap 180 - in the radial direction through the bearing bush 130, but from this further through the
• Figure 4 shows a third embodiment of the inventive arrangement, in particular for a possible guidance of the drainage channels.
• the bearing bush 130 has a collecting oil pocket 136 on its inner side facing the roll neck 14, and that the at least one drainage channel 132-1, 132-2 is in fluid-conducting connection with the oil pocket 136.
• the oil pocket is a local recess on the inside of the bushing and so the oil bag acts as a local volume enlargement of the annular gap; in the area of the collecting oil pocket, the thickness of the annular gap 180 and thus the thickness of the oil film therein is increased.
• the drainage channels 132, 132-1, 132-2 according to the invention are always formed only in the passage angle range ⁇ , but never in the Absperrwinkel Scheme ⁇ .
• Figure 5 shows possible arrangements and cross-sectional shapes for the drainage channels.
• the cross-sectional shapes shown therein, slit-shaped, round or rectangular are to be understood merely as examples;
• the drainage channels can have any Querterrorismsfornn. It is advantageous if the drainage channels extend in the circumferential direction of the bearing bush, be it slot-shaped, for example, as shown on the left in FIG. 5 or in the form of a plurality of singularly distributed in circumferential direction
• Drain channels as shown on the right in Figure 5.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Rolling Contact Bearings (AREA)
• Rolls And Other Rotary Bodies (AREA)

Priority Applications (8)

Applications Claiming Priority (2)

Publications (1)

Family

ID=55794992

Family Applications (1)

Country Status (12)

Cited By (1)

Families Citing this family (3)

Citations (7)

Family Cites Families (15)

• 2015
  • 2015-05-26 DE DE102015209637.8A patent/DE102015209637A1/de not_active Withdrawn
• 2016
  • 2016-04-21 CN CN201680030465.9A patent/CN107645973B/zh active Active
  • 2016-04-21 RU RU2017133008A patent/RU2675881C1/ru active
  • 2016-04-21 TR TR2019/00282T patent/TR201900282T4/tr unknown
  • 2016-04-21 PL PL16717404T patent/PL3302836T3/pl unknown
  • 2016-04-21 EP EP16717404.4A patent/EP3302836B1/de active Active
  • 2016-04-21 BR BR112017025033-0A patent/BR112017025033B1/pt active IP Right Grant
  • 2016-04-21 WO PCT/EP2016/058873 patent/WO2016188681A1/de active Application Filing
  • 2016-04-21 KR KR1020177027591A patent/KR101990391B1/ko active IP Right Grant
  • 2016-04-21 US US15/569,447 patent/US10710131B2/en active Active
  • 2016-04-21 JP JP2017554337A patent/JP6633649B2/ja active Active
  • 2016-04-27 TW TW105113072A patent/TWI617371B/zh active

Patent Citations (7)

Non-Patent Citations (2)

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